Log-raft.



G. G. DAVIS.

v LOG RAFT. D Aue.5,1913. RENEWED APR, 20, 1915.

PatentedJune 8, 1915.

APPLICATloN mi SAT GILBEBT'GERRY DAVIS, or VANCOUVER, .B31212153 COLUMBIA, CANADA.

Los-Rara.

Application'fua agu'st 5, 1913, serial No. 788,098. Renewed Aprn 2 0, 1915. .seriaiNq; 22,716.

T all whom imag concern.' i.

. Be it known that luf-GILBERT GERRY DAVIS,

acitizen offthe lUnited States of America,v residing lat Vancouver, in the Province of Britishf Columbia, Canada, have invented 4certain new .and useful Improvements. in

s Log-Rafts,1of .which the -following is a speci- Thi'sinvention relates toa logA raft which has-been 'particularly designed `for the con-` veyanceof lo'gs'inbpenv water where theymaybe exposed-to a roughsea, In the usual practice, the logs are inclos'edbet'ween two -parallel li-'nes' of smaller. logs known as boom s ticks,"which `are chained end to endftogether throughout -the" length ofthe V raft and are held apart laterally by cross -log's, 'known as swifters. Within the area -inclose'd vby these connected boom sticks, .the

logs -to be conveyedare floated, and where r the water i`srough cross logs known as. top

I swifter's areplaced across .thef-logs within the boomv and are chain-connected to' the. boomsticks on '-eajch side.' While this means v -may'seci'ire the logs in ordinary weather, whereexposed to a` rough sea the logs. are

i of the invention,

8 which is retained in the holding position thrownabout so much that theyy get under I' the inelosing boom sticks and are' washed .`out,.'and .moreov er thecapacity of the raft is limited to 'the area inclosed within'the boom sticks and swifters. rPhese defects of the existing system remedy by providing l' Within theJ boom sticks,`and parallel to them,

a-"se1'iesof;' logs which are all connected to one another and to the boom sticks on each side by wirerope'or chain.l Upon the floor of logs'so formed, a load o f loose logs may .be piled, considerably above the water level,

on the buoyancyofltheimmersed logs them-1A selves" and are retained in position bywire rope' or chain carried over them and' secured to the'bo'omzsticks on'each side.

The particular construction of the raft'is loaded showing the manner ofr connecting vthe floor logs to one another and tothe boom sticks. F ig.`A 2,51. plan-ofthe same;

F ig.f 5j is adetail of the trip hook connecting the ties tothe boom'sticks.

In these drawings' 2 represents the boom sticks 'which'.form thejouter ylateral edgesfof Aof the vboom sticks. boom sticks 2v`is filled ters Patent, is:

Fig. 3,-" -a crosssection otthe raftloaded vshowing l the overtie's.1 'F 1g. 4, apl'an' of-the same, and

the raft one-.each side, and 3 the swifters or cross 'logs which' maintain the parallelism are arranged parallel tothe boom 'sticks and The spa-cev between thefwith floor logs 4 which are connected to. one another'and to the rboom sticks 2 by awire .rope or. chain 5 and andunder these logs and is on each side Iliade fast tothe boom sticks 2, These wire '6, eachoiC which is` passed alternately over filled in on this floor of logs 4, as' shown in Fig. 3,- of" the drawings 'to a' height consider- Vals and' are 'made f ably yaboifethe' water lineand strong ropes A f orchains 11,A :are passed over them at interf;

The ends'of the floor-ties 5 and 6 and of the top-binders `1l are connected tothe boom a vsticks Q-by a' trip hook 8 somewhat as shown in Fig. 5, sol thatthey may be quickly' released to allow the `lo s to float free. These trip hooks 8, which brm no essential part .consist of a hoolrm'ember by a ring slidable onthe linkwithin which the hook is mounted, the withdrawal of which ring f ees the hook.

The raft i :"one that is simply constructed( f and the logs areistrongly tied together in a quantity considerably in excess of the float-` ing area within the boom sticks and will stand a rough sea without loss. f

Although described and illustrated as forv l the conveyance of. saw'logs, the Asystem is obviously applicable` for carrying poles or shingle bolts.

Having lnow particularly, described my invention, I hereby declare that'what I'claim as new and desire to be protected in by Let- 1. A log raft, comprising the combination parallel, of loor logs' arranged within the boom sticks and connected to f them by lines passing alternately under and l over the floor parallel boom 'sticks the ends of which are connected across by swifter`sfloor logs parwith two lines of boom sticksjconnected at .intervals by swifters `which maintain them alle]l to the boom sticks and -'connected toY I' tliem lines pass-ing*alternatelyl over and` 'y undertlie fioorflogs, one. line passing underwhile the lothcrfpasses over, on which floor' logs the load logs are placed, and 'overties nected by swifters between each pair of ends,.

floor logs between the boom sticks and .parallel to them, saidA floor logs connected at intervals to the booml sticks by lines passing. alternately over and under the floor logs, one

line passing under .whilet'the other .passes lover, said vlines connected to'the boom sticks .by trip hooks and overties connected t'Ofthe boom sticks and passing over the load on'the vfloor logs, the connection on one side being j by trip hooks. i, p v 4. A log raft., comprisingthe -coiibination lwith two sets of parallelly disposed boomfsticks, chains connectingtheadjacent ends of ysaid `sticks togethen; swfters located crosswise between each pair ofv ends and c011-l nearl the ends-of `the same and passing'alterf nately over and under the Hoor logs, one line ynested-to saidchainsfflcor logs between-each pair ofboom-st'icks and arranged parallel thereto,l lines connected to said booml sticksl passing under' whileganother, passes over,

trip hooksand overties'connecting said lines to the boom sticks and passing' over theloadlon the floor logs, theconnection On one side only being'by trip hooks,aall beng arranged whereby said raft is composed vof a plurality of'sectionsiexibly- 'joinedtogether, each sec-I tiony beingfin itselfv rigid-substantially las shown and 4:for the purposes described.

in presencegof. two witnesses.

' Witnesses.: l

' ROWLAND 'BB1TTA1N, e

In testimony whereof I aiix my signatureA -eiLBERfr' GERRY Davis." 

